upload file, image_upload_function

I'm new to php and apache. I'm trying to upload some files on my server
using a form and mysql. I went through pages on the net and got many
samples, but I don't know how to get it done. My concept is to give some
opportunity to some users with a privilege to upload images to create their
own pages through the cms. To get a clear idea on my problem, here is my
code.

Please if some one could help me getting my problem  solved. Thank you.

 

 <?php require_once('Connections/binary_data.php'); ?>

<?php

if (!function_exists("GetSQLValueString")) {

function GetSQLValueString($theValue, $theType, $theDefinedValue = "",
$theNotDefinedValue = "") 

{

  $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;

 

  $theValue = function_exists("mysql_real_escape_string") ?
mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

 

  switch ($theType) {

    case "text":

      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";

      break;    

    case "long":

    case "int":

      $theValue = ($theValue != "") ? intval($theValue) : "NULL";

      break;

    case "double":

      $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" :
"NULL";

      break;

    case "date":

      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";

      break;

    case "defined":

      $theValue = ($theValue != "") ? $theDefinedValue :
$theNotDefinedValue;

      break;

  }

  return $theValue;

}

}

 

 

$editFormAction = $_SERVER['PHP_SELF'];

if (isset($_SERVER['QUERY_STRING'])) {

  $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);

}

 

if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "form1")) {

  $insertSQL = sprintf("INSERT INTO binary_data (`description`, bin_data,
filesize) VALUES (%s, %s, %s)",

                       GetSQLValueString($_POST['description'], "text"),

                       GetSQLValueString($_POST['bin_data'], "text"),

                       GetSQLValueString($_POST['filesize'], "text"));

 

  mysql_select_db($database_binary_data, $binary_data);

  $Result1 = mysql_query($insertSQL, $binary_data) or die(mysql_error());